20201020112101 has 4 divisors (see below), whose sum is σ = 20201251801312. Its totient is φ = 20200788422892.

The previous prime is 20201020112083. The next prime is 20201020112107. The reversal of 20201020112101 is 10121102010202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20201020112101 - 2¹⁹ = 20201019587813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201020112107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115713771 + ... + 115888216.

It is an arithmetic number, because the mean of its divisors is an integer number (5050312950328).

Almost surely, 2^{20201020112101} is an apocalyptic number.

It is an amenable number.

20201020112101 is a deficient number, since it is larger than the sum of its proper divisors (231689211).

20201020112101 is an equidigital number, since it uses as much as digits as its factorization.

20201020112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231689210.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20201020112101 its reverse (10121102010202), we get a palindrome (30322122122303).

The spelling of 20201020112101 in words is "twenty trillion, two hundred one billion, twenty million, one hundred twelve thousand, one hundred one".